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(No Model.)

T. THOMPSON & F. OROOK.

SMASH PROTECTOR MECHANISM FOR LOOMS.

No. 42 ,292. F129 7H 20 [9 27. zo Fi 3. 2 8 2 9 7 l 2/7 BY ATTORNEY TNENanms PETERS co, moroumi, wnsmrmrcm, u. c,

UNITED STATES PATENT OFFICE.

THOMAS THOMPSON, OF DAYSVILLE, CONNECTICUT, AND FREDRICK CROOK, OFPROVIDENCE, RHODE ISLAND.

SMASH-PROTECTOR MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 428,292, dated May 20,1890.

Application filed August 15, 1889. Serial No. 320,879. (No model.)

To all whom, it may concern.

Be it known that we, THOMAS THOMPSON, of Daysville, in the county ofVindham and State of Connecticut, and FREDRIOK OROOK, of Providence, inthe county of Providence and State of Rhode Island, both citizens of theUnited States, have jointly invented certain new and useful Improvementsin Smash- Protector Mechanisms for Looms; and we do hereby declare thatthe following is a full, clear, and exact description thereof, which, inconnection with the drawings making a part of this specification, willenable others skilled in the art to which our invention belongs to makeand use the same.

Our invention relates to looms, and more particularly to asmash-protector mechanism for looms; and the object of our invention isto provide a positive and convenient mechfrom picking and prevent asmash in the shed when two shuttles are presented simultaneously by thebox motion at opposite ends of the shuttle-race, and which will at thesame time throw out the harness and box motions, and thus prevent losingthe pick.

Our invention consists in certain novel features of construction,combination, and operation of mechanisms for carrying out the objectabove mentioned, as will be hereinafter fully described, and the naturethereof indicated by the claims.

Referring to the drawings, Figure 1 represents in a transverse sectionalview our invention applied to the well-known Knowles loom, as shown anddescribed in United States Patent No. 134,992, of January 21,1873. Figs.2 and 3 are detail plan views of the indicator and release mechanism.Fig. 4 is a detail of the picking motion, in section, on line a; so,

. Fig. 1, looking in the direction of the arrow,

same figure; and Fig. 5 is an enlarged detail of the picking-arm andlatch.

In the accompanying drawings, 1 is the loom-side, 2 the crank-shaft, 3the bottom shaft, 4 the lay, 5 the breast-beam, 6 the pickingrock-shaft, and 7 the picking-shoe, all as ordinarily constructed andarranged. The picking-arm 8, connected to the picker-stick 9 in theusual way by connector 10 is forked I attached to the plate 13. anismwhich will automatically stop the loom on the lower end, and instead ofbeing fast on the picker-shaft, as is usually the case, is

pivoted on two collars 11, which are fast on the shaft.

12, is a plate 13, provided with a projection 14, (see Fig. 5,) which isnormally in engagement with a latch 15, pivoted on the outside of theforked picking-arm at 16 in such a position that it may be lifted toclear the projection 14, when the picking-shaft may be picked overwithout moving the arm and stick. The pickerstick and arm are returnedto the positions shown in the drawings after a pick by the usual spring9,attached to the bottom of the picker-stick, (see Fig. 4,) while i thepicker plate and shaft are returned when the latch is lifted by theauxiliary spring 13',

(See Fig. 4:.)

Hung in suitable boxes on the front of the lay are two rods 17 oneextending to each end of the lay, and meeting at a convenient point,preferably near the center. (See Fig. 2.) Fast on the outer ends of therods are feelers 18, Fig. l, which bear on the boxbinders in the samemanner as the usual protector-feelers. (Not here shown.) Feelers 18 areactuated by coil-springs 18', only one of which is shown, (see Fig. 2,)confined on rod .7 by set-collar 17'. One end of the spring 18' ishooked into collar 17 and the other end extends out and strikes againstthe lay, preventing the spring 18' from turning on the rod 17, when thetension is adjusted by turning set-collar 17 on the rod 1'7. Collar 17is fastened by set-screw 17 on the rod 17 in the requisite position togive the spring 18' the proper tension, all in the ordinary way. Justinside the bearings 19 on the inner ends the rods 17 are bent outward,forming arms 20, which bear under a plate 21, pivoted at 22 on theextremity of one of the feeler-rod bearings. (See Fig. 2.) Pivoted tothe plate 21 011 theinner end, toward the lay, is a plunger Fast on thepicker-shaft 6, between the two sides of the picking-arm fork 23, thelower end of which is fitted to slide freely in a guide 24, cast to thesame foot with the feeler-rod bearings. (See Fig. 1.) The end of the rodas the lay beats.

Pivoted at on a stand 26, bolted to thebreastbeam, is a lever 27, theinner end of which, toward the breast-beam, rests against a lug 28 onthe stand 26, in which position it is held lightly by the spring 29.(See Figs. 1 and Bolted adjustably to the outer end of lever 27 is acam-plate 30, the projecting point of which (see Fig. 3) is made to comewhen the lay beats directly in the path of the plunger 23 when at thelower extremity of its travel. Pivoted below the picking-shaft in stands31, bolted to the loom-side, is a shaft 32, (see Figs. 1 and 4,) whichextends across the loom, Fast on shaft 32 is an arm 33, so placed thatbent check-rod 34, which is pivoted to its extremity, comes 'in linewith the center of stand 26, Figs. 1 and 3, on the breast-beam. Theupper end of check-rod 34 enters 'a socket 35 on stand 26, in which itcan move freely. Fast on the end of shaft 32 is an arm 36, to which isattached a coilspring 37, the outer end of which is fastened to theloom-side at 3S-by link 39. (See Fig. 1.) Fast on shaft 32 is an arm 40,pivoted to the end of which is a connector 41, which is also pivoted toan arm 42, which is itself pivoted at 43 to the stand 31, bolted to theloom-side. 'Arm 42 extends out over the picking-shaft 6, and restsnormally just under a pin 45, fast in the latch 15, in such positionthat it does not obstruct the action of the picking-arm. Arm 42 is retained in this position against the action of spring 37, which wouldtend to lift it, and with it the latch 15, by the.check-rod 34, restingagainst the end of lever 27 on stand 26 on the breast-beam, which coversthe end of socket 35. The shaft 46, which drives the harness and boxmechanism on the Knowles loom, above referred to, is itself driven fromthe crankshaft by gears 47 and 48 through the clutch 49. The harness andbox mechanism is disconnected from the rest of the loom by lifting thetop part of the clutch 49 by means of bell-crank 50, connector 51, andhandlever 52, pivoted on a stud 53, fast on the loom-side, all of whichis as usually constructed and operated on the Knowles loom, abovereferred to. Pivoted to connector 51 at 54 is a rod 55, which rests in aloop 56, attached to rod 51 at such a height that an angle-plate 57,bolted to the back of the lay, just clears the (See Fig. 1.) Extendingupward'from connector 41 of the picker mechanism is a rod 58, the top ofwhich is bent over at right angles to the rod, and which terminates justunderneath rod 55 when it rests in its loop 56. The proportions betweenthe arms 20 on feelcr-rods 17, length of plate 21, and the movement ofthe shuttle-box binders is such that when the box on one end of the loomis empty and the binder is in the corresponding arm 20, through plate21, will hold the plunger 23 up to clear cam as the lay beats, and thatwhen the boxes on both ends of the loom contain shuttles and bothbinders are out the arms 20, through plate 21, will allow the plunger 23to drop into range with the cam 30. The cam 30 is so adjusted on itslever 27, with reference to the time of completion of the box-shift andthe beat of the lay, that when the shift is completed the plunger willhave time to drop into range with the cam 30 on the side next thebreast-beam, so that the movement of the lay backward will cause theplunger, acting on cam 30, to push aside the lever 27 against the actionof the spring 29, thus uncovering the end of socket and releasing bentcheck-rod 34. The proportions between arm on shaft 32, arm 42, pivotedto stand 31, and the arms of latch 15 on the picking-arm 8, are suchthat when the checkrod 34 is released the action of the spring 37 inrotating shaft causes arm 42 to lift the. latch 15 clear of thepicking-plate 13 and against the stop-pin 59, fast in the arm 8. (SeeFig. 4.) The position of the end of rod 55, resting in its loop 56, issuch that the movement of arm 42, which lifts the latch 15, also liftsthe end of rod through rod 58 into range with angle plate 57. Therelative lengths of rod 55 and plate 57 are such that plate 57 on thebackward swing of the lay engages the end of the rod 55, so as to throwout the clutch 49 as the crank approaches the back center.

The operation of the mechanism above described is as follows: As long asone empty box is presented to the race-level by the boxshift the plunger23 is kept clear of the cam and the releasing mechanism does not act.When on any pick the box-shift presents two shuttles level with therace, the plunger 23 drops into range with cam 30, the movement of thelay backward releases the check-rod 34, and spring 37 lifts the latch15, so that, when the loom picks, the picking-arms, connectors, sticks,and shuttles do not move, and as the crank nears the back center theharness and box mechanism is thrown out by the action of the lay throughangle-plate 57 on the clutch 49, so that these parts are always stoppedon the mispick in case of any inattention or confusion on the part ofthe weaver. By the failure of the shuttles to leave the boxes all dangerfrom the shuttles flying off the race or meeting and staying in theshed, resulting in a smash in the warp, is avoided. The filling is notput in, and the loom is stopped on the return beat of the lay by theordinary filling stop-motion. (Not shown.) When the loom is ready tostart after a mispick, the weaver, when he throws in the harness andbox-motion clutch, pushes downward on rod 58 till the check-rod 34catches under its retaining-lever 27, the socket35 being made longenough to obviate any danger of the check-rod being pushed out of thesocket 35 in setting.

We have shown and described our i11vention applied to the Knowles loom,above referred to; but it will be understood that it can be adapted andapplied to co-operate with the harness and box mechanism of any I otherloom without material modification and without departing from theprinciple of our invention. In some looms, and also in some forms of theKnowles loom, the harness and box-motion shaft is sometimes driven fromthe bottom shaft instead of the crank-shaft; but this difference ofconstruction would not affect the application of our invention to suchlooms.

Having thus described our invention in looms, what we claim as new, anddesire to secure by Letters Patent, is

1. In a loom, the indicator mechanism consisting of binder-feelers,rods, actuatingsprings, plungenplate, and plunger, check mechanismconsisting of a socket-stand, a cam-lever, a cam, and retaining-spring,the picking mechanism having a picking rockshaft and a forkedpicking-arm pivoted on the picking-shaft, a picking-plate fast on saidshaft, and a latch pivoted on said pickingarm, and the latch-liftingmechanism consisting of a shaft, a spring-actuated arm, check-rod andarm, latch-lifting arms, and link, in combination with the crank-shaft,bottom shaft, lay, breast-beam, and pickingtappet, all combined andoperated substantially as shown, and for the purpose stated.

2. In a loom, the indicator mechanism consisting of binder-feelers,rods, actuatingsprings, plunger-plate, and a plunger, check mechanismconsisting of a socket-stand, a cam-lever, a cam, and retaining-spring,picking' mechanism having a picking rock-shaft and a forked picking-armpivoted. on the picking-shaft, a picking-plate fast on said shaft, andalatch pivoted on said picking-arm,

and latch-lifting mechanism consisting of a

